wallet_balance
Check your wallet credit balance. Use this to see how many credits you have remaining. Credits are used to power AI tools (chat, rewrite, analyze). Buy more via wallet_buy. Parameters: api_key — Your API key (starts with 'gh_'). Create one at api.gadgethumans.com.
This record as markdown: /tools/com-gadgethumans-swarm-x402-middleware/wallet-balance.md
What wallet_balance does on X402 Middleware
AI agents call wallet_balance to retrieve information from X402 Middleware without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
api_key | string | Yes |
Parameters from the server's own tool schema.
Why wallet_balance is rated Low
This tool only retrieves and displays the current credit balance for a wallet. It performs a read-only query with no side effects, no financial transaction, and no data modification. The reference to 'Buy more via wallet_buy' confirms that purchasing is handled by a separate tool, making this purely a balance inquiry.
From the tool's definition Check your wallet credit balance... see how many credits you have remaining
Risk signalsHandles credentials or secrets (api_key)
Attacks that exploit this kind of access
The rule that runs wallet_balance safely
PolicyLayer is an MCP gateway: it sits between your AI agents and X402 Middleware, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For wallet_balance, this is the rule to start with:
wallet_balance is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect X402 Middleware, apply this rule, and every wallet_balance call is checked against it from then on.
Questions about wallet_balance
Check your wallet credit balance. Use this to see how many credits you have remaining. Credits are used to power AI tools (chat, rewrite, analyze). Buy more via wallet_buy. Parameters: api_key — Your API key (starts with 'gh_'). Create one at api.gadgethumans.com. It is categorised as a Read tool in the X402 Middleware MCP Server, which means it retrieves data without modifying state.
wallet_balance accepts 1 parameter: api_key. Required: api_key. The full parameter table on this page comes from the server's own tool schema.
Register the X402 Middleware MCP server in PolicyLayer and add a rule for wallet_balance: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches X402 Middleware. Nothing to install.
wallet_balance is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the wallet_balance rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for wallet_balance. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
wallet_balance is provided by the X402 Middleware MCP server (@gadgethumans/x402). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on X402 Middleware, and thousands of servers like it.
This server
Across the catalogue